EP1045625A1 - A foil fuse made on a circuit board - Google Patents

A foil fuse made on a circuit board Download PDF

Info

Publication number
EP1045625A1
EP1045625A1 EP00660065A EP00660065A EP1045625A1 EP 1045625 A1 EP1045625 A1 EP 1045625A1 EP 00660065 A EP00660065 A EP 00660065A EP 00660065 A EP00660065 A EP 00660065A EP 1045625 A1 EP1045625 A1 EP 1045625A1
Authority
EP
European Patent Office
Prior art keywords
foil
circuit board
fuse
foil fuse
gap
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP00660065A
Other languages
German (de)
French (fr)
Other versions
EP1045625B1 (en
Inventor
Teuvo Hakonen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Helvar Oy AB
Original Assignee
Helvar Oy AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Helvar Oy AB filed Critical Helvar Oy AB
Publication of EP1045625A1 publication Critical patent/EP1045625A1/en
Application granted granted Critical
Publication of EP1045625B1 publication Critical patent/EP1045625B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
    • H01H85/046—Fuses formed as printed circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0286—Programmable, customizable or modifiable circuits
    • H05K1/0293—Individual printed conductors which are adapted for modification, e.g. fusable or breakable conductors, printed switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/43—Means for exhausting or absorbing gases liberated by fusing arc, or for ventilating excess pressure generated by heating
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09—Shape and layout
    • H05K2201/09009—Substrate related
    • H05K2201/09063—Holes or slots in insulating substrate not used for electrical connections
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09—Shape and layout
    • H05K2201/09209—Shape and layout details of conductors
    • H05K2201/09654—Shape and layout details of conductors covering at least two types of conductors provided for in H05K2201/09218 - H05K2201/095
    • H05K2201/09727—Varying width along a single conductor; Conductors or pads having different widths
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10181—Fuse
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
    • H05K2203/11—Treatments characterised by their effect, e.g. heating, cooling, roughening
    • H05K2203/1178—Means for venting or for letting gases escape
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
    • H05K2203/13—Moulding and encapsulation; Deposition techniques; Protective layers
    • H05K2203/1305—Moulding and encapsulation
    • H05K2203/1311—Foil encapsulation, e.g. of mounted components

Definitions

  • the object of the invention is a foil fuse made on a circuit board, which fuse consists of a narrowed part of a foil conductor on the surface of the circuit board, and of a protective capsule covering the said part.
  • a fuse may be a separate component, such as a fusible resistor or a glass tube fuse.
  • the price of this type of fuses is high.
  • foil fuses which are made directly onto the circuit board as a thinning of the conductive pattern, are used.
  • Certain problems and limitations are, however, associated with these foil fuses, because in a short circuit situation their operation is not always reliable and safe, but on the contrary, electrical breakdowns occur and, due to the electric arc phenomenon, molten material may be released from the vicinity of the fuse.
  • operation is uncertain and in certain situations the operation of the fuse may destroy insulating materials.
  • Known foil fuses therefore, involve a risk of electrocution and of fire breaking out.
  • the aim of the invention is to provide an improved foil fuse by means of which the disadvantages relating to the above-mentioned known foil fuses can be substantially reduced.
  • This aim is achieved in accordance with the invention in such a way that there is gap in the circuit board, which gap is covered by a protective capsule and located adjacent to the foil fuse.
  • the circuit board gap adjacent to the foil fuse guides hot gases, and any splashes of molten material produced during the operation of the foil fuse, to the safe side of the circuit board, on which the conventional components mounted in holes are located.
  • the invention is, therefore, particularly well-suited for use in connection with so-called mixed boards, which have surface mounted devices (smd) on one side and conventional components mounted in holes on the other.
  • surface mounted devices there may naturally be surface mounted devices on both sides of the circuit board, provided that they are at a sufficient distance from the gaps, on the opposite side of the circuit board with respect to the foil fuses.
  • the protective capsule is made of elastic material which is spread as elastic mass to cover the foil fuse and the gap.
  • This type of protective capsule is advantageous with a view to manufacturing technique, but also as concerns functional reliability, because the elasticity of the protective capsule allows hot gases to expand before the gases are guided and discharged through the gaps 4.
  • the part of the circuit board 1 depicted in Figures 1 to 3 is shown as seen from the side on which the foil conductors 2 of the circuit board and the solder joints of the components are located.
  • a narrowed part 3 acting as a foil fuse has been made on both of the two parallel foil conductors 2.
  • the gaps 4 are adjacent to one another, between two foil fuses 3. The gaps may naturally be on either side of the foil fuse, or on both its sides.
  • the foil fuses 3 and the gaps 4 are covered by means of a protective capsule 6, which is a separate encapsulating housing fixed on the surface of the circuit board 1 by means of an adhesive or a snap-in type attachment.
  • the embodiment shown in Figure 3 differs from the former in that the protective capsule 7 is made of elastic material which is spread as elastic mass to cover the foil fuses 3 and the gaps 4.
  • the elastic mass 7 is attached on the surface of the circuit board 1 self-adhesively.
  • the encapsulating housing 6 or 7 has a separating wall 5 or 5' which is adhered to the circuit board part between the gaps 4. This means that each of the foil fuses 3 operates independently.
  • Locating the gaps 4 as close to the foil fuse 3 as possible is important, in order that explosively expanding gases and possible splashes of molten material will find their way to the gap 4 as easily as possible.
  • the gaps 4 can not be located at the same location (in alignment) with the foil fuse because the foil fuse can be manufactured only onto a solid circuit board.
  • the invention is applicable to various kinds of circuit board solutions, such as the electronic coupling devices (ballasts) of discharge lamps, light regulators, transformers, and other devices of illumination electronics.
  • circuit board solutions such as the electronic coupling devices (ballasts) of discharge lamps, light regulators, transformers, and other devices of illumination electronics.

Abstract

The object of the invention is a foil fuse made on a circuit board, which fuse consists of a narrowed part (3) of a foil conductor (2) on the surface of the circuit board (1), and of a protective capsule (6, 7) covering the said part. To guide the hot gases and any splashes of molten material produced when a fuse blows to the safe side of the circuit board, there is a gap (4) in the circuit board (1), which is covered by the protective capsule (6, 7) and located adjacent to the foil fuse (3).

Description

  • The object of the invention is a foil fuse made on a circuit board, which fuse consists of a narrowed part of a foil conductor on the surface of the circuit board, and of a protective capsule covering the said part.
  • Various kinds of fuse solutions are used on circuit boards. A fuse may be a separate component, such as a fusible resistor or a glass tube fuse. The price of this type of fuses is high.
  • It is for this reason that also the type of foil fuses mentioned above, which are made directly onto the circuit board as a thinning of the conductive pattern, are used. Certain problems and limitations are, however, associated with these foil fuses, because in a short circuit situation their operation is not always reliable and safe, but on the contrary, electrical breakdowns occur and, due to the electric arc phenomenon, molten material may be released from the vicinity of the fuse. Depending on the timing of the short circuit with respect to the half cycle of the mains voltage, operation is uncertain and in certain situations the operation of the fuse may destroy insulating materials. Known foil fuses, therefore, involve a risk of electrocution and of fire breaking out.
  • The aim of the invention is to provide an improved foil fuse by means of which the disadvantages relating to the above-mentioned known foil fuses can be substantially reduced.
  • This aim is achieved in accordance with the invention in such a way that there is gap in the circuit board, which gap is covered by a protective capsule and located adjacent to the foil fuse.
  • The circuit board gap adjacent to the foil fuse guides hot gases, and any splashes of molten material produced during the operation of the foil fuse, to the safe side of the circuit board, on which the conventional components mounted in holes are located.
  • The invention is, therefore, particularly well-suited for use in connection with so-called mixed boards, which have surface mounted devices (smd) on one side and conventional components mounted in holes on the other. There may naturally be surface mounted devices on both sides of the circuit board, provided that they are at a sufficient distance from the gaps, on the opposite side of the circuit board with respect to the foil fuses.
  • In a preferred embodiment of the invention, the protective capsule is made of elastic material which is spread as elastic mass to cover the foil fuse and the gap. This type of protective capsule is advantageous with a view to manufacturing technique, but also as concerns functional reliability, because the elasticity of the protective capsule allows hot gases to expand before the gases are guided and discharged through the gaps 4.
  • An embodiment of the invention is illustrated in the following with reference to the appended drawing, in which
    • Figure 1
    shows, as seen from above and as section A-A, a part of the circuit board with the foil fuse relating to the invention without the protective capsule;
    Figure 2
    shows, as seen from above and as section B-B, a part of the circuit board with a foil fuse corresponding to that shown in Figure 1, when covered by a protective capsule according to one embodiment of the invention; and
    Figure 3
    shows, as seen from above and as section C-C, a part of the circuit board with a foil fuse corresponding to that shown in Figure 1, when covered by a protective capsule according to another embodiment of the invention.
  • The part of the circuit board 1 depicted in Figures 1 to 3 is shown as seen from the side on which the foil conductors 2 of the circuit board and the solder joints of the components are located. In the case described, a narrowed part 3 acting as a foil fuse has been made on both of the two parallel foil conductors 2. Adjacent to both foil fuses 3, in their immediate vicinity, is made an elongated gap 4 in the circuit board 1. In the case shown, the gaps 4 are adjacent to one another, between two foil fuses 3. The gaps may naturally be on either side of the foil fuse, or on both its sides.
  • In the case of Figure 2, the foil fuses 3 and the gaps 4 are covered by means of a protective capsule 6, which is a separate encapsulating housing fixed on the surface of the circuit board 1 by means of an adhesive or a snap-in type attachment.
  • The embodiment shown in Figure 3 differs from the former in that the protective capsule 7 is made of elastic material which is spread as elastic mass to cover the foil fuses 3 and the gaps 4. The elastic mass 7 is attached on the surface of the circuit board 1 self-adhesively.
  • In the case shown, the encapsulating housing 6 or 7 has a separating wall 5 or 5' which is adhered to the circuit board part between the gaps 4. This means that each of the foil fuses 3 operates independently.
  • Locating the gaps 4 as close to the foil fuse 3 as possible is important, in order that explosively expanding gases and possible splashes of molten material will find their way to the gap 4 as easily as possible. The gaps 4 can not be located at the same location (in alignment) with the foil fuse because the foil fuse can be manufactured only onto a solid circuit board.
  • The invention is applicable to various kinds of circuit board solutions, such as the electronic coupling devices (ballasts) of discharge lamps, light regulators, transformers, and other devices of illumination electronics.

Claims (7)

  1. A foil fuse made on a circuit board, which fuse consists of a narrowed part (3) of a foil conductor (2) on the surface of the circuit board (1) and of a protective capsule (6) covering the said part, characterised in that the circuit board (1) has a gap (4) which is covered by a protective capsule (6, 7) and located adjacent to the foil fuse (3).
  2. A foil fuse as claimed in claim 1, characterised in that the protective capsule (7) is made of elastic material which is spread as elastic mass to cover the foil fuse (3) and the gap (4).
  3. A foil fuse as claimed in claim 2, characterised in that the elastic mass (7) is attached on the surface of the circuit board (1) self-adhesively.
  4. A foil fuse as claimed in claim 1, characterised in that the protective capsule is a separate encapsulating housing (6) fixed on the surface of the circuit board (1) by means of an adhesive or a snap-in type attachment.
  5. A foil fuse as claimed in any of the claims 1 to 4, characterised in that the gap (4) is elongated and located in the immediate vicinity of the foil fuse (3).
  6. A foil fuse as claimed in any of the claims 1 to 5, characterised in that there are two foil fuses (3) parallel to one another and between them two elongated gaps (4), one gap in the immediate vicinity of each foil fuse (3).
  7. A foil fuse as claimed in claim 6, characterised in that the encapsulating housing (6, 7) has a separating wall (5, 5') which is adhered to the circuit board part between the adjacent gaps (4).
EP20000660065 1999-04-14 2000-04-04 A foil fuse made on a circuit board Expired - Lifetime EP1045625B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI990819A FI106657B (en) 1999-04-14 1999-04-14 Foil fuse made on PCB
FI990819 1999-04-14

Publications (2)

Publication Number Publication Date
EP1045625A1 true EP1045625A1 (en) 2000-10-18
EP1045625B1 EP1045625B1 (en) 2008-07-30

Family

ID=8554414

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000660065 Expired - Lifetime EP1045625B1 (en) 1999-04-14 2000-04-04 A foil fuse made on a circuit board

Country Status (3)

Country Link
EP (1) EP1045625B1 (en)
DE (1) DE60039650D1 (en)
FI (1) FI106657B (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1308978A2 (en) * 2001-11-05 2003-05-07 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Fuse casing
EP1638125A1 (en) * 2004-09-15 2006-03-22 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Printed circuit board with conductor track fuse
EP1710825A2 (en) * 2005-04-04 2006-10-11 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Fuse assembly for protection of an electric device against overcurrent
DE102008022977A1 (en) 2008-05-09 2009-04-09 Siemens Medical Instruments Pte. Ltd. Encapsulated circuit manufacturing method for hearing aid, involves not encapsulating printed circuit board region by encapsulation and by rotatary attachment of upper surface to self-adhesive encapsulation, where surface is encapsulated
EP2408277A1 (en) * 2010-07-16 2012-01-18 Schurter AG Fuse element
DE102010037390A1 (en) * 2010-09-08 2012-03-08 Vossloh-Schwabe Deutschland Gmbh Multi-layer printed circuit board with printed circuit board fuse
JP2013258016A (en) * 2012-06-12 2013-12-26 Murata Mfg Co Ltd Fuse
DE102016219771A1 (en) * 2016-10-12 2018-04-12 Continental Automotive Gmbh Electronic assembly with a current limiting arrangement
EP3389077A1 (en) 2017-04-10 2018-10-17 Fibar Group S.A. Printed circuit fuse and method for use of the same
JP2020004983A (en) * 2015-06-24 2020-01-09 住友電工プリントサーキット株式会社 Flexible printed wiring board
WO2022229007A1 (en) * 2021-04-29 2022-11-03 Tridonic Gmbh & Co Kg Electronic device with conductor trace fuse and housing

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3447502A1 (en) * 1984-12-27 1986-07-10 Siemens AG, 1000 Berlin und 8000 München Board as a circuit carrier having a conductor track in the form of a layer
DE3723832A1 (en) * 1987-07-18 1989-02-02 Apag Elektronik Ag Printed circuit with an integrated fuse
JPH01266784A (en) * 1988-04-18 1989-10-24 Sumitomo Electric Ind Ltd Printed board with fuses
JPH03263726A (en) * 1990-03-14 1991-11-25 Fujikura Ltd Temperature fuse circuit board with protective case
US5097247A (en) * 1991-06-03 1992-03-17 North American Philips Corporation Heat actuated fuse apparatus with solder link
JPH0730213A (en) * 1993-07-14 1995-01-31 Sanyo Electric Co Ltd Printed board
JPH0785771A (en) * 1993-09-13 1995-03-31 Rohm Co Ltd Fuse and method for sealing it with resin

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3447502A1 (en) * 1984-12-27 1986-07-10 Siemens AG, 1000 Berlin und 8000 München Board as a circuit carrier having a conductor track in the form of a layer
DE3723832A1 (en) * 1987-07-18 1989-02-02 Apag Elektronik Ag Printed circuit with an integrated fuse
JPH01266784A (en) * 1988-04-18 1989-10-24 Sumitomo Electric Ind Ltd Printed board with fuses
JPH03263726A (en) * 1990-03-14 1991-11-25 Fujikura Ltd Temperature fuse circuit board with protective case
US5097247A (en) * 1991-06-03 1992-03-17 North American Philips Corporation Heat actuated fuse apparatus with solder link
JPH0730213A (en) * 1993-07-14 1995-01-31 Sanyo Electric Co Ltd Printed board
JPH0785771A (en) * 1993-09-13 1995-03-31 Rohm Co Ltd Fuse and method for sealing it with resin

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 014, no. 032 (E - 876) 22 January 1990 (1990-01-22) *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 073 (E - 1169) 21 February 1992 (1992-02-21) *
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 04 31 May 1995 (1995-05-31) *
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 06 31 July 1995 (1995-07-31) *

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1308978A2 (en) * 2001-11-05 2003-05-07 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Fuse casing
EP1308978A3 (en) * 2001-11-05 2004-12-01 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Fuse casing
EP1638125A1 (en) * 2004-09-15 2006-03-22 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Printed circuit board with conductor track fuse
EP1710825A2 (en) * 2005-04-04 2006-10-11 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Fuse assembly for protection of an electric device against overcurrent
EP1710825A3 (en) * 2005-04-04 2007-10-24 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Fuse assembly for protection of an electric device against overcurrent
CN1848350B (en) * 2005-04-04 2011-08-17 电灯专利信托有限公司 Fuse assembly for protection of an electric device against overcurrent
DE102008022977A1 (en) 2008-05-09 2009-04-09 Siemens Medical Instruments Pte. Ltd. Encapsulated circuit manufacturing method for hearing aid, involves not encapsulating printed circuit board region by encapsulation and by rotatary attachment of upper surface to self-adhesive encapsulation, where surface is encapsulated
EP2408277A1 (en) * 2010-07-16 2012-01-18 Schurter AG Fuse element
US10755884B2 (en) 2010-07-16 2020-08-25 Schurter Ag Fuse element
DE102010037390B4 (en) * 2010-09-08 2012-08-30 Vossloh-Schwabe Deutschland Gmbh Multi-layer printed circuit board with printed circuit board fuse
EP2429267A1 (en) * 2010-09-08 2012-03-14 Vossloh-Schwabe Deutschland GmbH Multi-layer circuit board with circuit board fixing
DE102010037390A1 (en) * 2010-09-08 2012-03-08 Vossloh-Schwabe Deutschland Gmbh Multi-layer printed circuit board with printed circuit board fuse
JP2013258016A (en) * 2012-06-12 2013-12-26 Murata Mfg Co Ltd Fuse
JP2020004983A (en) * 2015-06-24 2020-01-09 住友電工プリントサーキット株式会社 Flexible printed wiring board
US10653007B2 (en) 2015-06-24 2020-05-12 Sumitomo Electric Printed Circuits, Inc. Flexible printed circuit board
JP2020120140A (en) * 2015-06-24 2020-08-06 住友電工プリントサーキット株式会社 Flexible printed wiring board
DE102016219771A1 (en) * 2016-10-12 2018-04-12 Continental Automotive Gmbh Electronic assembly with a current limiting arrangement
DE102016219771B4 (en) 2016-10-12 2020-07-02 Continental Automotive Gmbh Electronic assembly with an arrangement for current limitation and use of such an electronic assembly in a motor vehicle
US11362511B2 (en) 2016-10-12 2022-06-14 Vitesco Technologies GmbH Electronic unit having an assembly for limiting current
EP3389077A1 (en) 2017-04-10 2018-10-17 Fibar Group S.A. Printed circuit fuse and method for use of the same
WO2022229007A1 (en) * 2021-04-29 2022-11-03 Tridonic Gmbh & Co Kg Electronic device with conductor trace fuse and housing

Also Published As

Publication number Publication date
FI990819A (en) 2000-10-15
EP1045625B1 (en) 2008-07-30
FI106657B (en) 2001-03-15
DE60039650D1 (en) 2008-09-11
FI990819A0 (en) 1999-04-14

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